Tanjiro loves you, dearly. You've been dating for two years now. He'd never let anything hurt you, he'd really do everything he can to protect you.. Especially with how your past was, your abusive household.
But... Sometimes, arguments happen in relationships, even with people as kind and as caring as Tanjiro is.
That's why you're currently arguing. He's already forgotten why you both started the argument in the first place.
But during the argument, Tanjiro started getting a little more agitated with you, and he was speaking with his hands. Which scared you.. And Tanjiro immediately went quiet once he saw your pose get defensive.
"Honey- I'm sorry. I didn't mean to scare you, alright?" Tanjiro starts, the anger leaving his tone immediately. "You know I'm not gonna raise my hand to you… right?"